Gun port for windshields



Feb. 26, 1929.

H. J. THELKER GUN ?ORT FOR WINDSHIELDS Filed Jan. 19, 1928 /I/l//U /fl IN VEN TOR i'rom a small arm,

.on a largerscale 'than F igure 1, showing the Patentd Feb. 26, 19 29.

UNITED STATES PATENT OFFICE.

AMERICA, OF NEW YORK,

ASSIGNOR TO TRIPLEX. SAFETY GLASS N. Y., A COBPOBATION OF DELL- GUN rom` Fon WINDSHIELDS.

Application filed January 19,v 1928. Serial No. 247,'775.

What is termed bullet-proof glass, that is, glass which cannot be penetrated by a bullet is now required. for the windshields of motor driven armored cars. In some municipalities it is also required that such a windshield shall be provided witha port through which the muzzle of a gun may be directed from within the windshield toward the assailant. The object of the present invention is to provide for such a gunport a Shutter which, whef in alignment with the port, shall be capable of preventng the ent'ance of a bullet from without and shall be capable of being swung readily to open position by a slight movement of the muzzle of the gun as' it is brought to the port. Provision is made whereby the Shutter is held securely in its closed position. The invention willbe more fully explainedhereinaft'er in reference to the accompanying drawing in which it is illustrated and in which:

Figure 1 is a View in elevation, as seen from theinside, of a motor car wndshi'eld, some of the supporting means being also indicated.

Figure 2 is a view of the same as seen from the right hand in Figure 1. e V Figure 3 is a detail view in section on the 'planeindicated by the broken line 3 --3 of Figure4, and on a larger scale.

'- 'Figure 4 s a detal view in elevation and Shutter in closed position Figure 5 s a deta l View n vertical section on the' plane' indicated bythe broken line,

5-5 of Figure 4. x

' The windshield b of bullet-proof 'glass of any suitable character, is provided at a convenient point or points .with an aperture or aperturesthrough 'which a gun may be directed :from the inside of the windshield to'- ward anassailant In such aperture is fitted a sleeve a flanged'at its outer end tobear against the outside of the windshield and V threaded at its inner end to receive a ring inward. The ring nut c is also provided, as

at d with a stop to limit the closing move- 'ment of the Shutter e and prevent it from passing out of engagement, when closed, with the lip d To the Shutter, on its inner face, is ssecured as by rivets, a transverse rib 6 which, as the gun is moved toward firing position, is strudli by the muzzle of the gun in a' as to throw the -shutter from its closed position, as shown in slight upward movement so the metal portion of Figure 1. i v

. It will be obvio s not only that the port is eft'ectually protected by the Shutter when the `Shutter is in it s closed position, -but that the shutteris readily and quickly thrown to open position in the movement of the gunpthere:

by fulfilling the requirement of speed;

I claim as my invention:

suitable packing being placed between 4 5 .The combination with a bullet-proof windshield having a gun-port formed therein, of 'a flanged sleeve passed through `the gunport from the outside' and' threaded'at its inner' end, a ring-nut threaded on the inner end of said sleeve, and a Shutter pivot'ed on the ring-nut atone side thereof, the ring-nut beingformed with a stop to limit the opening movement of the Shutter and with a lip opposite the pivot to engage' the edge of the Shutter, theshutterhaving a transverse rib .for 'engagen ent by a gin-muz zle in the open-- ing of the Shutter. i This specification signed this 17th day of January A-D. 1928.

'HENRY J. THIEBKEB. 

